e5edb226921d8ee387c36029a3dd2d49030fd52bbd5566e9fed853f72f163d40

Analysis

max time kernel
131s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 13:33

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General

Target

1a224c34d7fc70ac2c73a790dcb6929d.dll
Size

20KB
MD5

1a224c34d7fc70ac2c73a790dcb6929d
SHA1

911d25cec784a0e1e105c5f1aaf1f132f8be6d34
SHA256

e5edb226921d8ee387c36029a3dd2d49030fd52bbd5566e9fed853f72f163d40
SHA512

18a25ee100e9f498363ff4ca3e33ece12f24922d3bdfec31745dc119d3a3a62bd93d7c767d9a6323ed6a2a006ee7cf37a105ebd30c674152e094de17f3ff8017
SSDEEP

384:VlPyZNjtU2mMICVRQXAK4gGvEv0MfNHPGkGUR4pz7cnkkokLbgr:VdyZ8CbKtvNJR+YnkkA

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{14FAE856-AD58-20CB-A025-CD4895FA6E41}\ = "pjjxadwd.dll"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{14FAE856-AD58-20CB-A025-CD4895FA6E41}	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\verclsid.exe	rundll32.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{14FAE856-AD58-20CB-A025-CD4895FA6E41}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{14FAE856-AD58-20CB-A025-CD4895FA6E41}\InprocServer32\ = "C:\\Windows\\SysWow64\\pjjxadwd.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{14FAE856-AD58-20CB-A025-CD4895FA6E41}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{14FAE856-AD58-20CB-A025-CD4895FA6E41}\InprocServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4260	rundll32.exe
4260	rundll32.exe
4260	rundll32.exe
4260	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3792 wrote to memory of 4260	3792	rundll32.exe	14
PID 3792 wrote to memory of 4260	3792	rundll32.exe	14
PID 3792 wrote to memory of 4260	3792	rundll32.exe	14
PID 4260 wrote to memory of 5060	4260	rundll32.exe	20
PID 4260 wrote to memory of 5060	4260	rundll32.exe	20
PID 4260 wrote to memory of 5060	4260	rundll32.exe	20

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1a224c34d7fc70ac2c73a790dcb6929d.dll,#1
1⤵
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4260
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240602484.bat
  2⤵
  PID:5060

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1a224c34d7fc70ac2c73a790dcb6929d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\~DFD240602484.bat

Filesize
121B

MD5
09517fc62284f33e877a276463580bd1

SHA1
0b14fe1db4493818f9de0bf2a56ee5370b8d479a

SHA256
6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238

SHA512
1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d

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